Medical electrode
First Claim
1. In a medical electrode of the type adapted to be adhered to the skin, said electrode having means defining a cavity receiving an electrolyte and having an opening adapted to open to the skin, and having conductive means at the base of said cavity for allowing external connection to said electrolyte, the improvement wherein said means defining a cavity comprises a wall surrounding said base and said electrolyte and means supporting said base and said conductive means in a first position rearward with respect to said wall for an expanded volume of said cavity and for movement to a second position inwardly of said wall to reduce the volume of said cavity and thus press said electrolyte outwardly of said cavity through said opening for engagement with and compression against the skin, said means supporting said base resisting return of said base from said second position to said first position.
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Accused Products
Abstract
A medical electrode for attachment to the skin of a patient has a cup member forming a cavity for containing an electroylyte. The cup member has a base portion which is movable inwardly of the cup member so as to contract the interior volume of the cavity and in so doing displace the electrolyte outwardly of the cup member for contact to the skin of a patient. In a modification, the configuration of the base of the cup member allows an electrode conductor to be supported out of contact with the electrolyte until the base portion is moved to displace electrolyte outwardly of the cup member.
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Citations
6 Claims
- 1. In a medical electrode of the type adapted to be adhered to the skin, said electrode having means defining a cavity receiving an electrolyte and having an opening adapted to open to the skin, and having conductive means at the base of said cavity for allowing external connection to said electrolyte, the improvement wherein said means defining a cavity comprises a wall surrounding said base and said electrolyte and means supporting said base and said conductive means in a first position rearward with respect to said wall for an expanded volume of said cavity and for movement to a second position inwardly of said wall to reduce the volume of said cavity and thus press said electrolyte outwardly of said cavity through said opening for engagement with and compression against the skin, said means supporting said base resisting return of said base from said second position to said first position.
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6. In a medical electrode of the type adapted to be adhered to the skin, said electrode having means defining a cavity receiving an electrolyte and having an opening adapted to open to the skin, and having conductive means affixed to the base of said cavity for allowing external connection to said electrolyte, the improvement wherein said means defining a cavity comprises a wall surrounding said base and said electrolyte, and means joined to said wall and to said base for supporting said base in a first position remote from said skin and, upon application of a pressure to said base, shifting said base to a second position closer to said skin to reduce the volume of said cavity and thus press said electrolyte through said opening against the skin, and means joined to said wall and to said base having a curvature which reverses upon movement of said base from said first position to said second position so that said means joined to said wall and to said base resists return of said base from said second position to said first position.
Specification